KR101626104B1 - The manufacturing method of solid alcohol fuel - Google Patents

Abstract

The present invention relates to a preparing method of a solid alcohol fuel. More specifically, the preparing method comprises the following steps: putting acrylic acid and hydroxypropyl methylcellulose into a first stirrer, and mixing the same; putting alcohol into the first stirrer in which the acrylic acid and hydroxypropyl methylcellulose are mixed, and mixing the same; putting fatty acid into the first stirrer in which the alcohol is mixed, and mixing the same; putting water and sodium hydroxide into a second stirrer, and mixing the same; putting alcohol to the second stirrer in which the water and sodium hydroxide are mixed, and mixing the same; heating each of the first stirrer and the second stirrer in an indirect heat transfer manner such that the mixtures in the stirrers are at 50 to 55°C; filling the mixture in the first stirrer and the mixture in the second stirrer into a container; and cooling the container in which the mixtures are filled. According to the present invention, the prepared solid alcohol fuel has high combustion stability and low possibility of generation of toxic gas, and has high stability of storage and use. In addition, the solid alcohol fuel can provide thermal power for an emergency during an event or training at home, office, outdoors, or the like.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for producing a solid alcohol fuel,

The present invention relates to a method for producing a solid alcohol fuel, and more particularly, to a method for producing a solid alcohol fuel having less toxic gas generation during combustion, less combustion residues, and excellent storage stability.

The fuels used as thermal power sources are divided into solid fuels such as charcoal, coke and coal, and liquid fuels such as alcohol, benzol, and gasoline and gaseous fuels such as LPG.

In recent years, solid alcohols have been used as one of these energy sources.

Conventional solid alcohol fuels are produced by mixing alcohol, oil, and caustic soda, and have problems such as the danger of toxic gas generation, instability due to lack of stability during storage, and a large amount of residues after combustion. Therefore, various studies have been made to solve this problem.

As a prior art, Korean Patent Registration No. 10-0178868 discloses a method for producing fuel by aging a large amount of water as a main raw material, adding animal oil, petroleum oil and caustic soda thereto for a certain period of time, Japanese Patent Registration No. 10-1310121 discloses a method for producing a film comprising a first solution composed of 1 to 20% by weight of a hydrophilic resin and 20 to 90% by weight of an alcohol-based solvent, 1 to 30% by weight of a lipophilic resin, A second solution composed of 50 wt.% Of a thickener and a thickener increasing viscosity of 0.1 to 10 wt.%. In Korean Patent Laid-Open No. 10-2000-0007017, 3 kg of 1N caustic soda is added to 1 liter of water and diluted. When 10 kg of copper or vegetable oil is added and the mixture is heated and mixed, when the mixture is saponified and cooled to yield a solid, Roll, etc., and then 1 kg of the saponified solid is added to 20 liters of alcohol. Then, when the solid is heated at a temperature at which it has not been ignited for about 30 minutes in a hot water bath, the heating is stopped when the solid is dissolved in methyl alcohol Followed by cooling in a container.

However, all the fuels of the above-mentioned prior patents have many disadvantages such as generation of noxious gas during combustion, a large amount of residue after combustion, and poor storage stability.

KR 10-0178868 B1 KR 10-1310121 B1 KR 10-2000-0007017 A

Accordingly, an object of the present invention is to solve the above-described problems of conventional solid alcohol fuels, and it is an object of the present invention to provide a solid alcohol fuel which solves the problems of the conventional solid alcohol fuel described above by solidifying alcohol by using alcohols, fatty acids and sodium hydroxide, To provide a solid alcohol fuel which generates less toxic gas during combustion, has fewer combustion residues, and is excellent in storage stability and quality stability.

To achieve the above object, the present invention provides a solid alcohol fuel comprising an alcohol, a fatty acid, sodium hydroxide, hydroxypropyl methylcellulose, acrylic acid and water.

A composition comprising 86 to 92% by weight of alcohol, 4 to 6% by weight of fatty acids, 0.3 to 0.7% by weight of sodium hydroxide, 1.2 to 1.8% by weight of hydroxypropyl methylcellulose, 1.5 to 2.5% by weight of acrylic acid and 1 to 3% .

The alcohol is methanol, and the fatty acid is stearic acid.

The method comprises the steps of adding acrylic acid and hydroxypropylmethylcellulose to a first stirrer and mixing the mixture, adding alcohol to the first stirrer mixed with acrylic acid and hydroxypropylmethylcellulose, A step of adding and mixing fatty acid to a first stirrer in which alcohol is mixed, mixing water and sodium hydroxide into a second stirrer, mixing the mixture with a second stirrer in which water and sodium hydroxide are mixed, Heating the first stirrer and the second stirrer by indirect heat transfer so that the mixture in the stirrer is between 50 and 55 ° C; and mixing the mixture of the first stirrer and the second stirrer in a vessel Filling the container with the mixture, and cooling the container filled with the mixture.

Wherein the alcohol is methanol, the fatty acid is stearic acid, the alcohol is 86-92 wt%, the fatty acid is 4-6 wt%, the sodium hydroxide is 0.3-0.7 wt%, the hydroxypropylmethylcellulose is 1.2-1.8 wt%, the acrylic acid is 1.5-2.5 wt % Of water and 1 to 3% by weight of water, and the alcohol is divided into 1: 1 weight ratio, and the mixture is added to the first and second agitators.

According to the present invention, there is an advantage that the combustion stability is high and the generation of toxic gas is small, and the storage and use stability is high.

It also has the advantage of providing firepower for emergency or emergency events or training at home, office, or outdoor.

Hereinafter, the present invention will be described in detail.

Conventional solid alcohol fuels have a disadvantage in that they are not highly stable in combustion and generate toxic gas, have many combustion residues, and have poor storage and use stability.

Accordingly, the present invention is an improved version of this disadvantage of solid alcohol fuels and is characterized by containing alcohols, fatty acids, sodium hydroxide, hydroxypropylmethylcellulose, acrylic acid and water.

First, the principle of making a liquid alcohol in a solid phase is to use a saponification reaction, and a saponification reaction is a reaction that occurs when the oil and the base meet. That is, a strong base dissolves in water to generate hydroxide ions, and when the oil is mixed with the aqueous solution, hydroxide ions are saponified by bonding with the carbon of the oil. Conventionally, when a large amount of oil is used for the saponification reaction, the combustion stability is poor due to the use of the oil, and storage stability is also poor.

Therefore, the present invention uses only fatty acid instead of fat, and only fatty acid is used without using glycerin, which is unnecessary for the saponification reaction among the fatty acid and glycerin constituting the fat. In the present invention, stearic acid is particularly used as the fatty acid. Stearic acid is more excellent in storage and use stability, and economical in terms of cost.

As the alcohol, any of lower alcohols such as methanol, ethanol, isobutyl alcohol and isopropyl alcohol can be used, but it is most preferable to use methanol in consideration of economical aspects.

As the strong base, sodium hydroxide is used to induce the saponification reaction.

In addition, the hydroxypropylmethylcellulose is used as a solid stabilizer to maintain the storage stability of the solid fuel.

The acrylic acid is used as a thickener to increase the viscosity of alcohol to facilitate the production of solid fuel and increase the stability of use and storage.

The water is used as a solvent for dissolving sodium hydroxide which is a strong base.

The solid alcoholic fuel according to the present invention comprises 86 to 92% by weight of alcohol, 4 to 6% by weight of fatty acids, 0.3 to 0.7% by weight of sodium hydroxide, 1.2 to 1.8% by weight of hydroxypropyl methylcellulose, 1.5 to 2.5% 1 to 3% by weight. When the content of the fatty acid is less than 4% by weight, it is difficult to saponify. When the content of the fatty acid exceeds 6% by weight, the amount of the fatty acid is excessive. If the amount of the sodium hydroxide is less than 0.3% by weight, the saponification is also difficult. If the amount of the sodium hydroxide is excessively large, it is economically disadvantageous. If the content of hydroxypropylmethylcellulose and acrylic acid is insufficient, solidification is difficult and storage stability is poor, resulting in poor merchantability. If the content of hydroxypropylmethylcellulose and acrylic acid is too large, it may be difficult to mix each component, resulting in deterioration of quality and storage stability. , And is preferably used within the above-mentioned range.

The solid alcohol fuel of the present invention having the above-described structure uses a fatty acid, in particular stearic acid, in place of the oil, and by using additives such as hydroxypropylmethylcellulose and acrylic acid, toxic gas is less generated during combustion and combustion residues It is not only excellent in storage and use stability, but also high in manufacturing cost, so it can secure price competitiveness.

Hereinafter, a method for producing a solid alcohol fuel according to the present invention will be described in detail.

A method for producing a solid alcohol fuel according to the present invention comprises the steps of charging acrylic acid and hydroxypropylmethylcellulose into a first stirrer and mixing the mixture, adding alcohol to the first stirrer in which acrylic acid and hydroxypropylmethylcellulose are mixed, Mixing the water and sodium hydroxide into a second agitator, mixing the water and the sodium hydroxide in the second agitator, mixing the water and the sodium hydroxide, Mixing the mixture of the first agitator and the second agitator so that the mixture in the agitator is heated to 50 to 55 ° C by heating the first agitator and the second agitator by indirect heat transfer method, Filling the container with a mixture of the stirrer, and cooling the container filled with the mixture.

Adding acrylic acid and hydroxypropylmethylcellulose to the first stirrer and mixing.

First, acrylic acid and hydroxypropyl methylcellulose are added to the first stirrer and mixed for 5 to 15 minutes. At this time, the stirring speed is not limited, and stirring is carried out at room temperature.

Adding alcohol to the first stirrer in which the acrylic acid and hydroxypropylmethylcellulose are mixed and mixing.

Next, alcohol is added to the first stirrer and mixed for 5 to 15 minutes with stirring. At this time, as the alcohol, it is possible to use all the lower alcohol, but the methanol is used as the most preferable form, and the methanol injects half of the total methanol amount in the solid fuel. That is, each material is measured in weight% according to the description of the composition ratio of the solid fuel, and then the measured methanol is divided by 1: 1 weight ratio, and only half of the divided methanol is put into the first stirrer. And the other half is used for the second stirrer to be described later.

The reason why the alcohol is used as described above is to maintain the stable solid state while promoting the saponification reaction by raising the degree of dispersion of each component.

Adding the fatty acid to the first stirrer in which the alcohol is mixed, and mixing.

Next, the fatty acid is added to the first stirrer, and the mixture is further stirred for 5 to 15 minutes. At this time, stearic acid is most preferable as the fatty acid.

Water and sodium hydroxide are added to the second stirrer and mixed.

Separately from the first stirrer, water and sodium hydroxide are added to the second stirrer and stirred and mixed for 5 to 15 minutes. Here, since the water is used as a solvent for dissolving sodium hydroxide, a large amount of hydroxide ions are generated by dissolving sodium hydroxide in water through stirring.

Adding alcohol to the second stirrer where the water and sodium hydroxide are mixed and mixing.

Then, the alcohol is added to the second stirrer, that is, the remaining amount of the alcohol previously divided into the first stirrer is introduced into the second stirrer while stirring for 5 to 15 minutes so that the aqueous sodium hydroxide solution is thoroughly mixed with the alcohol.

Heating the first stirrer and the second stirrer by indirect heat transfer so that the mixture in the stirrer is between 50 and 55 ° C.

Next, the first stirrer and the second stirrer are respectively heated so that the mixture in the stirrer is heated to 50 to 55 ° C. At this time, since the direct heating is a risk of burning, it is preferable to heat it by the indirect heat transfer method. The above-mentioned indirect heat transfer type heating method can be used in various forms known in the field to which this technology belongs, and the specific method thereof is not limited.

The temperature of the mixture is maintained at 50 to 55 占 폚. The reason for maintaining the temperature of the mixture at 50 to 55 캜 is that the saponification reaction is promoted in the above-mentioned temperature range, and production in a solid phase is facilitated.

Filling the vessel with a mixture of the first agitator and the second agitator.

When the heating is completed and the temperature is maintained, the mixture of the first stirrer and the second stirrer is packed in a container and packed to induce the saponification reaction. That is, the fatty acid in the first stirrer reacts with hydroxide ions in the second stirrer to form a solid fuel.

Cooling the container filled with the mixture.

Then, the container is cooled using a cooling water bath or the like, and the lid is closed and sealed to complete the production of the solid fuel.

The solid alcohol fuel produced as described above can be used for various purposes other than the above, as well as being capable of providing thermal power for emergency emergency in an event or training in home, office, outdoor, and the like.

Hereinafter, the present invention will be described in detail with reference to specific examples.

(Example)

Examples were prepared with the composition ratios shown in Table 1 below.

Composition ratio of the examples. division Stearic acid Sodium hydroxide Hydroxypropylmethylcellulose Acrylic acid Methanol water Example 1 50g 5g 15g 20g 890g 20g Example 2 60g 7g 18g 25g 860g 30g Example 3 40g 3g 12g 15g 920 g 10g

Here, in the order of stirring, acrylic acid and hydroxypropylmethylcellulose were first added to the first stirrer, and the mixture was stirred for 10 minutes. Then, methanol was added thereto and mixed for 10 minutes, then stearic acid was added and stirred for 10 minutes. The second stirrer was charged with water and sodium hydroxide for 10 minutes, and the remaining amount of methanol was added thereto, followed by further mixing for 10 minutes. Then, the mixture in the first stirrer and the second stirrer was indirectly heated to reach 55 ° C, and then the heating was stopped, and the mixture was put into a predetermined container. Then, it was cooled using a cooling water bath (about 10 ° C). At this time, the stirring speed was about 70 to 200 rpm.

(Comparative Example)

Were prepared in the same manner as in Examples, but with composition ratios as shown in Table 2 below.

Composition ratio of comparative examples. division maintain Sodium hydroxide Hydroxypropylmethylcellulose Acrylic acid Methanol water Comparative Example 1 50g (rad) 5g - 20g 890g 20g Comparative Example 2 60g (palm oil) 7g - 25g 860g 30g

(Test Example 1)

The combustion tests of Examples 1 to 3 and Comparative Examples 1 and 2 thus prepared were carried out. The combustion test was carried out by placing 10 g of each sample in an evaporation dish and igniting, and the combustion time, the combustion temperature and the residues were measured.

The results are shown in Table 3 below.

Results of Test Example 1. division Burning time (sec) Burning temperature (℃) Residue (g) Example 1 211 715 0.02 Example 2 205 722 0.04 Example 3 217 691 0.01 Comparative Example 1 185 690 0.10 Comparative Example 2 184 671 0.07

As can be seen from the above Table 3, it can be confirmed that the solid fuel of Examples 1 to 3 has a longer burning time than that of Comparative Examples 1 and 2, and almost no residue. However, there was no significant difference in the combustion temperature.

(Test Example 2)

Examples 1 to 3 thus prepared were sealed and stored at 30 DEG C for 6 months. After 6 months, each solid fuel was visually observed, and the difference between before and after storage was measured. Then, the above combustion test was carried out again.

In Examples 1 to 3, there was no significant change from the initial stage of visual observation, and there was no difference in the weight before storage and after storage. Also, the results of combustion test were similar to those in Table 3,

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the present invention. Accordingly, the actual scope of the present invention will be defined by the appended claims and their equivalents.

Claims (5)

delete delete delete Mixing and stirring acrylic acid and hydroxypropylmethylcellulose in a first stirrer,
Adding and mixing alcohol to the first stirrer in which acrylic acid and hydroxypropyl methylcellulose are mixed,
Adding a fatty acid to a first stirrer in which the alcohol is mixed to mix,
Adding water and sodium hydroxide to the second stirrer and mixing them,
Adding alcohol to the second agitator in which the water and sodium hydroxide are mixed,
Heating the first agitator and the second agitator in indirect heat transfer mode so that the mixture in the agitator is heated to 50 to 55 ° C;
Filling the container with a mixture of the first agitator and the second agitator,
And cooling the vessel filled with the mixture. ≪ RTI ID = 0.0 > 21. < / RTI >
5. The method of claim 4,
Wherein the alcohol is methanol,
The fatty acid is stearic acid,
And is used in a ratio of 86 to 92% by weight of alcohol, 4 to 6% by weight of fatty acid, 0.3 to 0.7% by weight of sodium hydroxide, 1.2 to 1.8% by weight of hydroxypropylmethyl cellulose, 1.5 to 2.5% Wherein the alcohol is divided into a weight ratio of 1: 1, and the mixture is introduced into a first agitator and a second agitator, respectively.